Well drilling machine



March 21, 1939. J. SUTH WELL DRILLING MACHINE Original Filed Oct. 7, 1956 3 Sheets-Sheet l All.

Inventor Ike/I! Sal/ b By @M A itop'neys March 21 1939.

J SUTH WELL DRILLING MACHINE Original Filed Oct. '7, 1956 5 Sheets-Sheet 2 Invenior \J a/c/B 520270 aw M amma A iiorneys March 1939- J. suTH 2,151,057

WELL DRILLING MACHINE Original Filed Oct. '7, 1956 s Sheets-Sheet s I 63 I 24 24 v I, v I

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| Q Inventor l ll g Ja/ck Sui/v A itorneys Patented Mar. 21, 1939 UNITED STATES PATENT OFFICE Application October "I, 1936, Serial No. 104,515 Renewed November 8, 1938 1 Claim.

This invention relates to devices for drilling wells and more particularly to that form of well drilling device referred to as a portable drilling rig and embodying a boom or derrick pivotally 5 mounted at the rear 01 the vehicle to swing from a substantially horizontal position when not in use to a substantially vertical position for use.

The invention per se, consists in the provision of improved means for swinging the boom or der- 10 rick of the portable drilling rig to either of the two positions above mentioned.

More particularly the invention consists in what may be termed a hydraulic jack for raising or swinging the boom or derrick to a vertical po- 15 sition when the rig is to be used for drilling a well.

The invention together with its objects and advantages will be best understood from a study of the following description taken in connection 20 withthe accompanying drawings wherein:

Figure 1 is a side elevational view illustratin the application of the invention.

Fig. 2 is an enlarged detail sectional view taken through the jack.

25 Fig. 3 is an enlarged detail side elevational view of the lower portion of the jack with its supporting bracket associated therewith.

Fig. 4 is an elevational view taken at right angles to Fig. 3.

30 Fig. 5 is a. side elevational view of the clamp forming part of the supporting bracket.

Fig. 6 is an elevational view taken substantially at right angles to Fig. 5 and with parts broken away and shown in section, and

35 Fig. 7 is a detail view partly in section and partly in elevation showing a valve assembly hereinafter more fully referred to.

Figure 8 is a horizontal section of the valve contrcLing the fluid for extending the jack.

40 Referring in detail to the drawings, it will be seen that 5 indicates generally a conventional motor truck forming part of the portable well drilling equipment.

Mounted on the body frame of the truck 5 ad- 45 jacent the rear end of the frame is a suitable supporting structure 6, to which is pivoted as at l, the well drilling boom or derrick 8.

The boom or derrick 8 is more or less of conventional structure being provided at its upper 50 end with a sheave 9 over which the drilling cable in is trained as shown. The winch on which the drilling cable I is windable isalso suitably mounted on the body frame of the truck as indicated by the numeral ll.

55 The present invention is concerned with the mechanism for swinging the boom or derrick 8 from the dotted line position shown in Fig. 1 to the full line position shown in said figure, and for controlling the return movement of the derrick 8 from the vertical full line position shown 116:; Fig. 1 to the horizontal position shown in For supporting the boom or derrick 8 in the dotted line position shown in Fig. 1, there is provided directly rearwardly of the cabin of the 10 truck a suitable rest or support I2.

For securing the derrick 8 in the vertical position shown in Fig. 1, there are provided at the rear of the body of the truck 5 suitable clamps l3 engageable with the leg extensions H of the derrick in a manner clearly shown, but forming no essential part of the present invention.

The mechanism of the present invention consists of an hydraulic jack comprising a plurality of telescoping tubes, in the present instance three tubes indicated generally by the reference numerals l5, l6 and i1, respectively.

A carrier or supporting bracket for the jack comprises, in the present instance, a substantially circular plate l8 provided with a circular threaded recess l9 and a semi-cylindrical wall extension 20 which accommodates the section l5 oi. the jack. Section l5 of the jack at its lower end is open and is externally threaded as at 2| for threaded engagement with the recess. I9 of the plate i8. Cooperating with the semi-cylindrical wall 20 of the carrier is an arcuate clamp strap 22, the opposite ends of which are provided with laterally directed apertured lugs to mate with apertured lugs 23 provided at opposite sides of the wall extension 28 to accommodate bolts 24 as clearly shown.

The wall section 20 is provided with a substantially squared formation 25 to which is bolted or otherwise secured as at 28 a plate 21.

The plate 21 has formed integral therewith one end of a pivot or stub shaft 28. The shaft 28 is journaled in a suitable bearing 29 provided therefor on the body frame of the truck 5 and is held in position against endwise movement through the bearing block through the medium of a shoulder 30 provided adjacent one end of the stub shaft and a lock nut 3| threaded on the free end of the stub shaft. The nut equipped end of the stub shaft 28 is housed within a circular flange 32 projecting from the bearing 29 and externally threaded for the threaded reception of a dust cap 33. Confined within the cap 33 is a suitable gasket 34, (see Fig. 2). Thus it will frame of the truck for pivotal movement.

The section l1 of the jack has threaded in its free end a plug 35 secured in position through the medium of a lock nut 36. Plug 35 is provided with an integral eye 31 through the medium of which and a pivot bolt 38 the section II of the jack is pivoted to the boom or derrick 8 at one side of the latter as shown in Fig. 1. Thus it will be seen that as the sections of the jack are caused to move outwardly relative to one another, a push is exerted on the derrick 8 for forcing the same from the dotted line position shown in Fig. 1 to the full line position shown in said figure. Also as the sections of the jack are permitted to telescope one within the other, the

, boom or derrick 8 will be permitted to slowly swing from the vertical position shown-in Fig. 1 to the dotted line position shown in said figure. In this connection it will be appreciated that the telescoping movement of the sections of .the jack will serve to retard the downward swinging movement ofthe boom or derrick and will preclude sudden or unanticipatedreturn'movement There isalso mounted on the truck 5 and suitably positioned on the truck a tank or reservoir 39 for oil or other suitable fluid. Theoil in the.

tank or reservoir-39 is drawn'therefrom through a pipe 40 which connects the tank with a pump 4| suitably mounted on the truck and driven from the power take-off shaft of the truck or otherwise and as indicated generally at '42..

Leading from the outlet side of the pump 4| is a conduit pipe 43 that is connected to one side of a suitable four way valve 44.

As best shown in Fig. 8, there is connected to the opposite side of the valve 44, an outlet pipe 45 that leads to the tank 39 for returning the fluid to the latter incidental to a lowering of the boom or derrick 8."

Also leading from'one side of the valve 44 is a pipe 46 that at one end is tapped into the bearing 29 for feeding fluid toan internal groove 41 formed in the wall of the bearing 29 and which is in constant communication with a passage 48 provided in the stub shaft 28.

Connected with the passage 48 in the stub shaft is one end of a pipe'49, which at its opposite end isconnected with one side of a check valve 50 and is also provided with a branch 5l that is tapped into one side of a control valve 52. Tapped into the bottom of the plate I8 is a pipe 53 that has one endthereof tapped into the casing of the .check valve 50 and-at said end a branch 54 is tapped into the casing of the valve 52.

Since it will be seen that with the core 44:;

of valve 44 in the position shown inFig. 8 so that the passage 55 in the core connects the pipes 43, 46, oil pumped from the tank or reservoir '39 will flow through the valve 44, the pipe 46, groove the jack section i6'and in this manner force the boom or derrick 8 from the horizontal position shown in Fig. l'tothe vertical or full line position shown in said flgure;

Tapped in the casing 44 at the side' thereof is one end ofca pipe 63 that'has' its -otherjend' the latter to swing from 'a .full line position shown.

passage 62 through the pipe"83'into"theI-space{ wardly-v to horizontal position. Thus' it seen that as the sections of the 'jack telescope of the construction, utility, operation and ad-,

claimed as new is:

be seen that the jack is mounted on the [body opposite the .pipe 46 is one end 01' a pipe 583that a j at its respective opposite end is tapped into the? bearing 29 as at 68 forfeeding oil toa seco'ndj groove 6| provided in the bearing 28 and which is in constant communication with apassage162"v 5 11 3 formed in thestub shaft. 28. jAlsota'pped. into? thestub shaft 28 at one. end of I the passage" 622" tapped intov the'upp'er -gland'equipped endx6 of the Jack section-[5J Thus it will be seen that when it [is Idesire to lower the boom or derrick 8, that -istofeause in Fig. 1 tothe-dotted line position shown iri'said' figure, the core 44a of valve-44 is'turn passage '55 in the core registers with-t I pipes 48 and 45 while passage-'65 in ithefvalvecoref' registers with. pipes 43 and 58. I Thus :1 ;will .-be seen that oil pumped from the container89twil1; I pass through the pipe 48 intothe. valve .44{pass-.

'ing throughthe passage 65 in thevalve' an-d'the I pipe 58 into the groove61'in-the -bearin'g29i From the groove 69 theoil will passthrough the} .between the sections I6 and i5 oi the jackj i n "a manner to act on the, Piston 56 of=1thesectionl6 v to cause'the latter to telescope or; move. within; the section l5. 'As the section. 'Hiofthejjackg moves toward its final telescopeda position the j fluid within the sections l5 and I6 ofthefjack will drain through the pipe 53, valve 52;, "pipe-im a esage 41, groove 41, and pipe 46 to 'p' 'rss throughj g the passage 65 ofvalve core 44a andjthrough the pipe 45 to return to the tank cprreservoir-39. j g Obviously as the fluid pressure onthe piston :51 .j is released in this manner, jack section 11 :will. tend to move inwardly of the iack'section 16 under weight of the derrick 8 so'that the derrick 8 will slowlymove from the 'verticalposition i shown in Fig. 1 to the horizontal position sag- 5 gested by the broken lines in Fig. 1. After the lowering of the boom "or derrick 8 has been accomplished in this manner,-';va1ve' "42 is returned to neutral position where it. will remain until the operation of raising the derrick-" or boom 8 and the lowering thereof as above described is to be repeated. r In connection with the above, it will "be" ap-- 1 parent that the check valve 50 will serve to cause the fluid draining from the jack to pass through the valve 52 which may be positioned atany'desired position of adjustment for controlling the fluid therethrough, and thereby regulate the speed-at which the derrick 8 will swing -.down-* one within the other, the 'iderrick 8 will move slowly downwardly from its vertical to -the horirest smoothly p 8 will have many advantages over the present practice of resorting "to acable' windablej'on a drumdri-ven" through gearingsforeflfecting "a raisingorv lowering of the mast,-boom'or derrick, as the member 8 is generally referred to' in the art;

It is thought that .a'complete' understanding vantages of the invention of; this character will i be had without a more-detailed description. Having thus-described the invention, what is:

In a hydraulic lift'for the boom of a. portable well drilling rig, a bearing mounted on the rig,

a bracket having a recessed horizontal base plate I and a semi-cylindrical vertically extending wall,

a. pivot bolt journaled in the bearing and conin the recess of the bracket base plate and secured to the semi-cylindrical wall thereof and l extensible sections in said cylinder and pivotally connected with the boom, and means for extending and collapsing the said extensible sections. 5

JACK SUTH. 

